Changed the packaging again ;)
 - As I revised recently, i don't like the version number I introduced anymore. This means this project has the same version numer as the original artemis.
 - As the jar isn't deployed to any mvn repository the gwt dependency is totally not important. So I removed the classifier.
 - Added a "distZip" task which is executed in a normal "build" to package a distribution which includes the original artemis and the gwt integration as well. So you only have to get the zip file and extract it into your project.